How your phone is detected by Windows device manager when you connect it with vol- button? Recently flashtool bricks so many Sony phones during flash attempt that i would not recommend that tool to anybody. Try PC Companion to fix your phone.
yes sure detected on windows device manager,,, i has installed the driver before... s1fasboot driver and s1service driver... i has try with PC Companion to fix,, PC Companion is not detect anything, i try with vol- i see green led only on 1 second blink... and now my head going stucked hahaha